Included In This Set Are Two Of Our Most Popular 4-Inch Diameter, Flat, Round, Power Scrubbers. Use These Brushes For Larger Area Scrubbing And Cleaning. Included Is A Soft White 4-Inch Gentle Power Scrubber And A 4-Inch Medium Yellow Bathroom Scrubbing Brush | | The 4-Inch Soft White Flat Brush Will Restore Your Glass Shower Doors To Their Gleaming Best. This Brush Is Also Perfect For Bigger Areas That Require Thorough, But Gentle, Scrubbing. Tackle Large Outdoor Areas Like Truck Tonneau Covers And Large Boat Deck Carpets Quickly With This Larger Brush. Keep Boat And Auto Covers Clean So No Outside Dirt Falls Off Onto Your Vehicle | | The Medium Yellow Power Brush Tackles Those Tiresome, Time Consuming, Bathroom Cleaning Tasks. Cut Through Soap Scum, Hard Water Stains, Mineral Deposits, Calcium Build-Up, And Rust Discoloration.The Ultimate In Bathroom Accessories For Scrubbing And Cleaning. The Nylon Bristles Will Not Scratch. Use On Bathroom Tile, As A Shower Scrubber, Grout .